Going-barrel for watches



(No Model.)

D. H. CHURCH.

GOING BARREL FOR WATCHES.

No. 339.378. Patented Apr. 6, 1886.

N. PETERS. FMlmhmognpher. wanun mn, D. C.

UNITED STATES PATENT OFFICE.

DUANE H. CHURCH, OF NEXVTON, MASSACHUSETTS.

GOING-BARREL FOR WATCHES.

SPECIFICATION forming part of Letters Patent No. 339,378,dated April 6, 1886.

Application filed September 121, 1885. Serial No. 177,663. (No model.)

To on whom it may concern:

Be it known that I, DUANE H. CHURCH, of Newton, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Going-Barrels for Watches, of which the following is a speeit'r cation.

This invention has for its object to simplify the construction and increase the mainspringholding space in goingbarrels for watches without increasing the thickness of the barrel, thus permitting a wider spring than usual in barrels of ordinary size; and it consists in a barrel having an arbor rigidly secured to it and journalcd in the two plates supporting the barrel, and a main or winding wheel journaled upon a boss formed on one of the movementplates, said winding-wheel having a hub surrounding the arbor of the barrel and the collar, to which the inner end of the mainspring is attached, said winding-wheel serving, also, as a cover for the barrel, as I will now proceed to describe.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a side view of theplates of a watch-n'iovement having my improved goingbarrel. Fig. 2 represents a section on line as at, Fig. 1. Fig. 3 represents a similar section showing a modification.

The same letters of reference indicate the same parts in all the figures.

In the drawings, a and I) represent the movement-plates, and 0 represents the going-barrel. Said barrel is provided with an arbor, d, which is rigidly secured to the barrel and projects from both sides thereof, one end of said arbor beingjournaled in the plate a and the other in the plate b. The barrel is provided, as usual, with the toothed perimeter e, which engages with the center wheel of the watch-movement.

f represents the winding-wheel, which engages with the pinion on the swinging yoke on the winding and handssetting mechanism. The wheel f has a central hub, g, which is journaled so as to rotate freely upon a circular boss, 2, formed on the plate a, and is provided with the hook or projection h, with which the inner end of the mainspringj is engaged, the

outer end of said spring being attached to the v thus combining the winding-wheel and cover in one piece I enable the width of the mainspring-holding space to be increased without any enlargement of the barrel, so that a wider spring may be employed.

The construction is simplified by the forma tion of the spring-supporting baby on the windingwheel and by providing the movementplate a with the boss '5, on which the mainspriug-hub is journaled, and the barrel with the arbor (1 extended in both directions, so as to'enter the plates at and b and pass through the winding-wheel.

The arbor d may be screwed into the barrel, as shown in Fig. 2, or may be slightly tapered and driven in, as shown in Fig. 3.

I clairn- 1. The combination of plates to b, the barrel having the arbor d, jonrnaled in said plates, the winding-wheel having a central hub journaled upon a boss formed on the plate a, and the mainspriug secured to said hub and barrel, as set forth.

2. In awatch-movement, thewinding-wheel having the central spring-holding hub journaled on a boss formed on one of the movement-plates, combined with the going-barrel bearing on said hub, and having an arborjournaled independently in the movement-plates and passing through said hub, as set forth.

In testimony whereofl have signed my name to this specification, in the presence of two subscribing witnesses, this 18th day of September, 1885.

DUANE H. CHURCH.

Witnesses:

EDWARD A. Mama, 0. F. BROWN. 

